VariantDir
Function
Use the VariantDir
function to establish that target
files should be built in a separate directory
from the source files:
VariantDir('build', 'src') env = Environment() env.Program('build/hello.c')
Note that when you're not using an SConscript file in the src subdirectory, you must actually specify that the program must be built from the build/hello.c file that SCons will duplicate in the build subdirectory.
When using the VariantDir
function directly,
SCons still duplicates the source files
in the variant directory by default:
% ls src hello.c % scons -Q cc -o build/hello.o -c build/hello.c cc -o build/hello build/hello.o % ls build hello hello.c hello.o
You can specify the same duplicate=0 argument that you can specify for an SConscript call:
VariantDir('build', 'src', duplicate=0) env = Environment() env.Program('build/hello.c')
In which case SCons will disable duplication of the source files:
% ls src hello.c % scons -Q cc -o build/hello.o -c src/hello.c cc -o build/hello build/hello.o % ls build hello hello.o